Getting ready for the V8 swap

[Dusty Bradford]

Originally Posted by TurboTerry87gn

I was considering the Dart 220 full cnc raised runner with the spread port exhaust.
SBC 220 Race Series Full Port Assembled
Intake Port 248cc
Chamber Volume 62cc

Dart: SBC 220 Race Series Heads

Thats the biggest air to air i could find that dosent hang below the bumper. Almost 5" thick. Dick Kerney has gone 8's with it I think it will do in my application as I'm only running the 1/8 mile.

Those should match nicely. With 324cfm on the intake they're 1500hp capable at 30# of boost. I just noticed the head list you posted. If you were trying to make as much power as possible on a 23 degree head I'd look into the All-pro RR245 or the BMF RR230. The AFR raised runner 227 is nice as well. If I remember right your in a turbo restricted class so you won't need the more $$ head. The Dart 220 is a nice choice.

[Ted A.]

Originally Posted by Dusty Bradford

Judging by your intercooler I'd say the hp goals aren't high enough to need a raised runner head.

I was thinking the same thing. Anybody know what kind of MAT temps Dick saw on that pass?

[Dusty Bradford]

Originally Posted by Ted A.

I was thinking the same thing. Anybody know what kind of MAT temps Dick saw on that pass?

They weren't that high. Can't remember the exact #'s since it's been a while since I looked at the logs.

A raised runner 23* head could make 1700 with a lot of boost....that's a long way from the 900ish that Dick's making. What kind of mat's would a cooler like that put out on a low 8 second car?

[Ted A.]

I would be speculating on how high the MAT temps would be with that much HP. The turbo outlet temps will be the similar providing the boost is about the same, just the amount of air to deal with in a shorter time will be significantly more so I doubt it will be very effective at 1700, probably the same results we saw with Jacks front mount I/C, the graph will look like a mountain instead of a relatively flat line like it should be.

The biggest concern of mine will be the pressure drop.

[Dusty Bradford]

He'll probably let us know what the turbo limit is but I think when he started this his class is turbo limited so I doubt he'll make much or any more power than a TSO class car. What kind of inlet temps does yours run? I would think his will be in the same range as yours, given the power is the same.

The list of heads have some high hp capability but with a turbo limit he won't need a head the flows over 320. The n2o guys are probably using the high $$ RR heads.

[Ted A.]

Dusty, the MAT temp was 105.5F at the time I crossed the finish line on the 8.48 @ 163.31 pass.

[Dusty Bradford]

Originally Posted by Ted A.

Dusty, the MAT temp was 105.5F at the time I crossed the finish line on the 8.48 @ 163.31 pass.

105....nice

[TurboTerry87gn]

I was looking at the All-pro RR245-SP heads you suggested.
What are the down nozzles?
Do you think I really need upgraded exhaust valves. Iconel.

http://www.allproheads.com/images%20...%20Cat2-08.pdf

I just want to get some cylinder heads I can grow into. I know their more than I need for the 76mm turbo, but I might move up to the next class in a year ot two and I don't see a restriction on the turbo size.

[TurboTerry87gn]

Well my 010 casting was bad, so I'm going to go ahead and build the Dart block.
Guess I will just have to bite the bullet and shell out the extra money for the good stuff.
Dart Little M
Oliver rods
Callies crank
All the expenisive stuff.

[Louie L.]

You are going about it the right way. Build it right the 1st time. Also if you werent aware, Dart is coming out with a new midline block,between stock and little m.

[John Wilde]

LL,

I have read 900-1000HP rating on the new block.
If that is true for most turbo race type applications I would probably still go
with the better block.

[Louie L.]

Originally Posted by John Wilde

LL,

I have read 900-1000HP rating on the new block.
If that is true for most turbo race type applications I would probably still go
with the better block.

John,
I wasnt aware of that rating . But a prepped 010 SBC with 4 bolt main caps and half fill can do 900hp.

[TurboTerry87gn]

Well I stopped working on the buick over the summer to spend time with the kids.
I have the main hoop and dash bar bent and set in place and hopefully I will have the inside part of the roll cage completed over the next 11 days as i'm on vacation.

The plans for the motor have changed. I have decided not to run in the True street class and but to make it a mean street car I can still enjoy on any sunny day.

Dart little m 4.125 bore
callies 3.625" stroke
388 cu/in motor 8.5 - 9 compression.
oliver rods
All pro heads
roller cam
Single forced inductions FI88 mm turbo.

I think this will give me the best of both worlds a smaller motor I can drive on 93 octance to cruise with and something I can spin the hell out of when I'm at the track so i can push that turbo.

[John Wilde]

Originally Posted by TurboTerry87gn

Well I stopped working on the buick over the summer to spend time with the kids.
I have the main hoop and dash bar bent and set in place and hopefully I will have the inside part of the roll cage completed over the next 11 days as i'm on vacation.

The plans for the motor have changed. I have decided not to run in the True street class and but to make it a mean street car I can still enjoy on any sunny day.

Dart little m 4.125 bore
callies 3.625" stroke
388 cu/in motor 8.5 - 9 compression.
oliver rods
All pro heads
roller cam
Single forced inductions FI88 mm turbo.

I think this will give me the best of both worlds a smaller motor I can drive on 93 octance to cruise with and something I can spin the hell out of when I'm at the track so i can push that turbo.

Thanks for the update, that sounds like a really fun project.

[TurboTerry87gn]

Here is some pics pn the progress.

[TurboTerry87gn]

PICs Removable dash tight fit, IN Progress

[TurboTerry87gn]

Got some parts in today.



Tial wastegates should be in next week, Plan is to run twin 75mm turbos just waiting on some info abot the exhaust housing. Don't know if I can spool these things.

372" SBC with 23 degree heads that flow 300+ cfm and I plan on spinning it upto 8k rpm. I'm running a th400 with standard gears, brake, PTC converter, in a 3400 lb car I want to be able to run high 7's and was looking at the s400-75 turbos for a twin turbo setup, but was wondering about the exhaust housing A/R ratio.
I tried to get ahold of Jose at Forced Inductions but haven't had success. They offer a 1.10 housing witch is the better of the 2 options, they also offer the 1.32 housing which is too big i think.
Borg Warner & TurboDriven

[Louie L.]

Remember you are only feeding each turbo with 1/2 of the motor. Housing choice will be critical to get the car to spool.

[TurboTerry87gn]

Yeah I know, I'm not sure about these turbos but the price is good. I just need somebody whos tried it to say NO way to change my mind about these turbos. I will be using the xfi transbrake feature to spool before completly staged and a small shot of nitrous isn't out fo the question either.

Also I haven't made up my mind about the engine size either. I'll be using the dart little-m 4.125 bore but I don't have the crank or rods or pistons yet. I just wanted to leave enough piston compression height so the pin wasn't to high in the pistion.
My plan changed to a 3.48 stroke 4.125 bore 5.85 long rods. for a good rod ratio but thats not in stone.